Английская Википедия:Asterocidaris

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Шаблон:Short description Шаблон:Automatic taxobox

Asterocidaris is a genus of fossils sea urchins in the family Hemicidaridae. These epifaunal grazer-deposit feeders lived in the Middle and Upper Jurassic age (from 171.6 to 161.2 Ma).[1]

Species

  • Asterocidaris besairiei Lambert, 1936
  • Asterocidaris meandrina (Agassiz 1840) [2]
  • Asterocidaris ragoti Lambert, 1936

[3]

Description

These fossil spined echinoid sea urchins can reach a diameter of about Шаблон:Convert, with spicules of about 69x60mm.[4] They are hemispherical, flattened beneath, with small apical disc.[5]

Distribution

Fossils of species within this genus have been found in the Middle to Upper Jurassic sediments (Bajocian-Oxfordian) in Europe, Madagascar and Africa (Morocco).[3][5]

References

Шаблон:Reflist

Шаблон:Taxonbar

Шаблон:Echinoidea-stub